Home Page: http://www.tokoh.biz/ E-Mail: [email protected] TOKOH DENKI CO., LTD. Distributer SARAH Ringing generator module (sine wave) for the bell of analog fixed-line telephone, SR-923 series P/N SR-923-12 SR-923-24 Power supply voltage 12V DC 24V DC ● Outline ● PCB dimensions (4) ● Ref.) 600-A1Model Analog fixed-line telephone (Specification of Former NTT: Nippon Telegraph and Telephone Public Corporation) Ringing Bell Power supply of the analog fixed-line telephone is not commercial power supply. Therefore, the analog telephone is used as emergency call at the time of blackout by the disaster. This product is ringing generator (sine wave) for the bell of analog telephone. ● Product Number (P/N) ● Primary electrical specifications Note 1) Include temperature rise of the ringing generator module. Note 2) No condensation at normal temperature(20±5°C). ● Example of analog fixed-line telephone ● General Rating Rated Voltage Rated Current Normal Rated Power Operating Temperature /Humidity Range Storage temperature /Humidity Range SR-923-12 SR-923-24 SR-923-12 SR-923-12 SR-923-24 SR-923-24 12 V±10% DC 24 V±10% DC 600 mA DC max.( Ave.) at 12 V DC 300 mA DC max.( Ave.) at 24 V DC Temperature: -10 to +60°C (See Note 1) Humidity: 20 to 90% (See Note2) Temperature: -20 to +60°C(See Note 1) Humidity: 20 to 90%(See Note 2) 2.8 Watt 2.8 Watt 2016.05.12 Ver.1.1 Note) In case of 5V(DC) or 48V(DC) becomes the customer specification. When the customer specifications, we would like an inquiry. PCB thickness: 1.6 mm Height of mounting component from PCB top surface: 12 mm Height of mounting component from PCB bottom surface: 2 mm I/O Connectors Board connector: JST P/N: B8B-EH Mating connector: JST P/N: EHR-8 (Housing) JST P/N: SEH-001T-P0.6 (Contact) 1) Output voltage :75V+8V/-10V(Balanced line output) at load resistance of 2kΩ. 2) The load of Max.: Example)Telephone ”600 - A1 model”(Former NTT), 3 sets max. 3) Frequency of Generator : 16Hz(sine wave), 15Hz to 18Hz. 4) Distortion factor :10% maximum. 5) Voltage proof : 500V AC(r.m.s) 1 minute between input from output. 6) Example of wave form chart : Measurement condition --- Temperature : 25°C, Input voltage : 24V, Load resistance : 2kΩ.